Support for rock-drills



(No Model.)

DE 'VOLSON WOOD.

SUPPORT FOR ROCK DBILLS.

Patented Dec. 9, 1884.

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SUPPORT FOR ROCK-=DRILLS.

SPECIFICATION forming part of Letters Patent No. 309,180, dated December 9, 1884.

Application filed January 11:, ism. (No model.)

To all whom it may concern:

Be it known that I, DE VoLsoN W001), a

citizen of the United States, and a resident of Boonton, in the county of Morris, and State of New Jersey, have invented certain new and useful Improvements in Supports for Rock Drills, of which the following is a specification.

The invention relates to an improvement in gadding or channeling frames for rook-drills; and it consists in a frame and legs of novel construction which will permit the holes to be made in the rock in a row, and more or less nearly in a vertical plane.

The distinguishing characteristics of the invention will be fully understood from the detailed description hereinafter presented, reference being had to the accompanying drawings, in which Figure l is a perspective view of a frame embodying the elements of the invention. Fig. 2 is a detached edge View of the upper end of one of the'adj ustable supporting-legs; and Fig. 3 is a View, partly in section, of one of the legs.

A denotes a rectangular frame for supporting the movable piece or saddle B, to which the drill O is attached. The drill is operated between the sides of the frame, as shown, and may be moved longitudinally along the frame by the operation of a longitudinal screw, D, in the customary manner. The drill may be secured to the frame while drilling a hole by means ofthe bolt E. One end of the frame is supported by legs F, so attached to the frame at their upper ends that they may be secured at any point along the side of the frame, so that the operator may set the feet G G G on comparatively small blocks of stone.

In order to make the legs sufficiently stiff,

and at the same time light and strong, they are made V- shaped, so that when secured at their upper ends they will be self-braced. The upper end, a, of the part of the legs F nearest the end of the frame extends above the frame, and is secured. as shown in Fig. 2, by means of the plate H and the throughbolts I, one passing above the side of the frame and the otherjust below it. The upper end of the part b of the legsF extend only part way up the side of the frame A, so as to permit the saddle B to pass it, and is secured to the frame by means of a bolt, cl, passing through its upper end and just under the side of the frame. The other end of the frame A is supported by a single self braced leg firmly secured to the frame, as shown, or in any other suitable manner. The legs are adjusted for length by means of screws.

"What I claim as my invention, and desire to secure by Letters Patent, is-

The rectangular frame A,between the sides of which is supported the drill and operating mechanism, as described, in combination with a support for one end of the frame, and a pair of adjustable V-shaped legs for the other end thereof, one of said legs being clamped to each side of the frame, and being composed of parts a b, the upper end of thelatter of which is below the upper edge of the frame, while the upper end of the former is bolted to a plate, II, above and below the frame, substantially as set forth.

Signed at New York, in the county of New York and State of New York, this 5th day of January, A. D. 1884.

DE VOLSON IVOOD. lVitnesses:

CHAS. O. GILL, HERMAN GUSTOW. 

